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      6.21.&nbsp;Attr-2.4.47
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        Linux From Scratch - Version 8.0-systemd
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        Chapter&nbsp;6.&nbsp;Installing Basic System Software
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      <h1 class="sect1">
        <a id="ch-system-attr" name="ch-system-attr"></a>6.21. Attr-2.4.47
      </h1>
      <div class="package" lang="en" xml:lang="en">
        <p>
          The attr package contains utilities to administer the extended
          attributes on filesystem objects.
        </p>
        <div class="segmentedlist">
          <div class="seglistitem">
            <div class="seg">
              <strong class="segtitle">Approximate build time:</strong>
              <span class="segbody">less than 0.1 SBU</span>
            </div>
            <div class="seg">
              <strong class="segtitle">Required disk space:</strong>
              <span class="segbody">3.3 MB</span>
            </div>
          </div>
        </div>
      </div>
      <div class="installation" lang="en" xml:lang="en">
        <h2 class="sect2">
          6.21.1. Installation of Attr
        </h2>
        <p>
          Modify the documentation directory so that it is a versioned
          directory:
        </p>
        <pre class="userinput">
<kbd class=
"command">sed -i -e 's|/@pkg_name@|&amp;-@pkg_version@|' include/builddefs.in</kbd>
</pre>
        <p>
          Prevent installation of manual pages that were already installed by
          the <a class="xref" href="man-pages.html#man-pages"><code class=
          "filename">man pages</code></a> package:
        </p>
        <pre class="userinput">
<kbd class="command">sed -i -e "/SUBDIRS/s|man[25]||g" man/Makefile</kbd>
</pre>
        <p>
          Prepare Attr for compilation:
        </p>
        <pre class="userinput">
<kbd class="command">./configure --prefix=/usr \
            --disable-static</kbd>
</pre>
        <p>
          Compile the package:
        </p>
        <pre class="userinput">
<kbd class="command">make</kbd>
</pre>
        <p>
          The tests need to be run on a filesystem that supports extended
          attributes such as the ext2, ext3, or ext4 filesystems. The tests
          are also known to fail if running multiple simultaneous tests (-j
          option greater than 1). To test the results, issue:
        </p>
        <pre class="userinput">
<kbd class="command">make -j1 tests root-tests</kbd>
</pre>
        <p>
          Install the package:
        </p>
        <pre class="userinput">
<kbd class="command">make install install-dev install-lib
chmod -v 755 /usr/lib/libattr.so</kbd>
</pre>
        <p>
          The shared library needs to be moved to <code class=
          "filename">/lib</code>, and as a result the <code class=
          "filename">.so</code> file in <code class=
          "filename">/usr/lib</code> will need to be recreated:
        </p>
        <pre class="userinput">
<kbd class="command">mv -v /usr/lib/libattr.so.* /lib
ln -sfv ../../lib/$(readlink /usr/lib/libattr.so) /usr/lib/libattr.so</kbd>
</pre>
      </div>
      <div class="content" lang="en" xml:lang="en">
        <h2 class="sect2">
          <a id="contents-attr" name="contents-attr"></a>6.21.2. Contents of
          Attr
        </h2>
        <div class="segmentedlist">
          <div class="seglistitem">
            <div class="seg">
              <strong class="segtitle">Installed programs:</strong>
              <span class="segbody">attr, getfattr, and setattr</span>
            </div>
            <div class="seg">
              <strong class="segtitle">Installed library:</strong>
              <span class="segbody">libattr.so</span>
            </div>
            <div class="seg">
              <strong class="segtitle">Installed directories:</strong>
              <span class="segbody">/usr/include/attr and
              /usr/share/doc/attr-2.4.47</span>
            </div>
          </div>
        </div>
        <div class="variablelist">
          <h3>
            Short Descriptions
          </h3>
          <table border="0" class="variablelist">
            <colgroup>
              <col align="left" valign="top" />
              <col />
            </colgroup>
            <tbody>
              <tr>
                <td>
                  <p>
                    <a id="attr" name="attr"></a><span class=
                    "term"><span class=
                    "command"><strong>attr</strong></span></span>
                  </p>
                </td>
                <td>
                  <p>
                    Extends attributes on filesystem objects
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <p>
                    <a id="getfattr" name="getfattr"></a><span class=
                    "term"><span class=
                    "command"><strong>getfattr</strong></span></span>
                  </p>
                </td>
                <td>
                  <p>
                    Gets the extended attributes of filesystem objects
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <p>
                    <a id="setattr" name="setattr"></a><span class=
                    "term"><span class=
                    "command"><strong>setattr</strong></span></span>
                  </p>
                </td>
                <td>
                  <p>
                    Sets the extended attributes of filesystem objects
                  </p>
                </td>
              </tr>
              <tr>
                <td>
                  <p>
                    <a id="libattr" name="libattr"></a><span class=
                    "term"><code class="filename">libattr</code></span>
                  </p>
                </td>
                <td>
                  <p>
                    Contains the libbrary functions for manipulating extended
                    attributes
                  </p>
                </td>
              </tr>
            </tbody>
          </table>
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